Alfred h



A.H.CASTLE. INSULATOR.

Patented Mar. 10, 1868.

guitar: mm, gem: in.-

ALFRED H. CASTLE, 'OF- ANN ARBOR, MICHIGAN Letters Patent No. 75,865, dated March 10; 1868 IMPROVEMENT IN IHSULATOBS.

e Srhztnl: rtizmh h in, em mm we no m; m n 1n mu.

TO ALL WHOM IT MAY CONCERN:

Be it known thatI, Atrium H. CASTLE, of Mn Arbor, intue county of.Washtenaw, snd State of Michigan, have invented certain new and useful Improvements in Insulators; and do hereby declare that the following in it full and complete deseriptionof the same, reference being bad to the acco part if this specification, in which- I Figure 1 is a side view of -the insulators Figure 2 is a front view.

Figure 3 is a vert ica l section.

Like letters of reference refer to like parts in the views.

In fig. 1, A is: bracket, in the end of which is aunlr s chamber or deep recess; Bflig, 8. Iulertdd in this hnmher is a wood-core or block fl, which, it will be observed, does not fill the recoil, but leaves a space between it and the walls of the chamber. '1) is a hoolr, he stem of which is acrew'ed into the block 0, as shown in the vertical section, fig- 3, and by-which it is secured in the bracket as follows} viz: The core on being inserted in thechumbor, the space between item! the walls and bottom isfi as shown in fig. 1, in which the dotted line 0 represents the pole tewhich the bracket-insulator is nailed. The position of the insulator is downward. In. order to prevent the rain from running down the bracket iuto the 1 1:, and thereby ofi'er favorahle meane'for the escape of the current, a deep channel or groove, E, fig. 2, is cut around the end of the bracket, so as to conduct the waster around to the lower or under side of the insuletor sit the point 1 fig 1, and from which it will run ofi'remotelyfrdm thohoolr.

The use of the bracket may be dispensed with and the block 0 inserted in holes made in 'th' cross-pieces fixed to the top of the poles, and thus provide: simple, deep, and perfect insulating support for the wire.

What I clnin'i as my improvement, and desire to secure by Letters Patent, is-

1. A -telegrnph-insulator or bracket constructed with agrcve, E, substantially as and for the-pprpole set forth.

2. The cavity or chamber B and groove E, in combination with the bracket A, substantially as set forth.

ALFRED H. CASTLE. Witnesses:

J. H. B uun nea, J. Houses.

:npanying drawings, melting a 

